<template>
    <el-container class="home-container">
        <!-- 头部区域 -->
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <!-- 页面主体区域 -->
        <el-container>
            <!-- 左侧侧边栏 -->
            <el-aside :width="isCollapse?'64px':'200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <el-menu background-color="#373d41" text-color="#fff"  active-text-color="#409eff" unique-opened :collapse="isCollapse" :collapse-transition="false" router :default-active='activePath'>
                    <!-- 一级菜单 -->
                    <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
                        <!-- 一级菜单模板区域 -->
                        <template slot="title">
                            <!-- 图标 -->
                            <i :class="iconsObj[item.id]"></i>
                            <!-- 文本 -->
                            <span>{{item.authName}}</span>
                        </template>
                        <!-- 二级菜单 -->
                        <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
                        <!-- 二级菜单模板区域 -->
                            <template slot="title">
                                <!-- 图标 -->
                                <i class="el-icon-menu"></i>
                                <!-- 文本 -->
                                <span>{{subItem.authName}}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <!-- 右侧内容区域 -->
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>

</template>
<script>
export default {
    data() {
        return {
            menulist:[],
            iconsObj: {
                '125': 'iconfont icon-user',
                '103': 'iconfont icon-tijikongjian',
                '101': 'iconfont icon-shangpin',
                '102': 'iconfont icon-danju',
                '145': 'iconfont icon-baobiao'
            },
            // 是否折叠左侧侧边栏
            isCollapse:false,
            // 被激活的链接地址
            activePath: ''
        }
    },
    created() {
        this.getMenuList()
        this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods: {
        //退出登录
        logout(){
            //清空token
            window.sessionStorage.clear()
            //跳转到登录页
            this.$router.push('/login')
        },
        //获取左侧侧边栏数据
        async getMenuList(){
            const { data:res } =await this.$http.get('menus')
            // console.log(res);
            if(res.meta.status !== 200) return this.$message.error(res.meta.msg);
            this.menulist=res.data
        },
        // 是否折叠左侧侧边栏
        toggleCollapse(){
            this.isCollapse = !this.isCollapse
        },
        // 把被激活的链接地址保存到sessionStorage中
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath=activePath
        }
    },
}
</script>
<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    color: #fff;
    font-size: 20px;
    padding-left: 0;
    align-items: center;
    > div {
        display: flex;
        align-items: center;
        span{
            margin-left: 20px;
        }
    }
}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right: none;
    }
}
.el-main{
    background-color: #eaedf1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    color: #fff;
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>